/*!
    \file    readme.txt
    \brief   description of TIMER2 PWM input capture demo

    \version 2025-08-01, V1.0.0, firmware for gd32c2x1
*/

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*/

  This example is based on the GD32C231C-EVAL-V1.0 board, it shows
TIMER peripheral to measure the frequency of an external signal.

  The TIMxCLK frequency is set to CK_AHB, the prescaler is 48, so the TIMER2 counter
clock is 1MHz.

  The external signal is connected to TIMER2 CH0 pin (PB4).
  The rising edge is used as active edge.
  The TIMER2 CH0CV is used to compute the frequency value.
  The TIMER2 CH1CV is used to compute the duty cycle value.

  The available frequence of the input signal is ranging from 16Hz to 20KHz. You can use
USART to watch the frequency of the input signal.The USART is configured as follow:
  - BaudRate    = 115200 baud
  - Word Length = 8 Bits
  - One Stop Bit
  - No parity
  - Hardware flow control disabled (RTS and CTS signals)
  - Receive and transmit enabled
